Plate holder and indicator therefor



H. F. WA |TE PLATE HOLDERAND INDICATOR THEREFOR. APPLICATION FILED NOV. 16, 1918.

1,404, 1 7 l at t d J an. 1.7, 1922.

curren stares rare-m;- QFFICE,

1 HARRY warm, on, NEW YORK, N. Y.

To all wlz pin 'z't may concern: f

Be it known that I, HARRY F WVArraua citizen of "the United States, and a resident .l

' of WhitestoneLanding, city of New York,

county of Queensand State fof New York,

. (whose post-ofiiceaddress is 252WVest 29th Street, New York' 'c ity,)" .have invented a,

n'ewgandusefu'l Improvement in Plate-Hold to the view shown,in Figure 1, to disclosev ers and Indicators-:Therefor, of which the' following is a specification-.

' The object of Imylinvention is to provide aQsuit'a'ble plate holder fqr dental films'which may be placed 'inthe mouth'offa patient re-' peatedlyj and in any predetermined position with regard to the directionof propagation of X-rays so that when the device is in 'use, shadow pictures of parts may be re eatedly taken from the same position bi t e plate and uniform results I obtained. A furtherobject istomak'e 'a simple, reliable and durable holder which is suited to all dental requirements. These and other objects are. accomplished by my invention, one embodi ment of which is'hereinafter more particularly set forth, I a ,v

'F or a more particular description of my invention, reference is tobe had to the accompanying drawings, forming a part hereof, in which: A I H Figure l-is an edge view of my improved plate holder.

Figure 2 is a view taken at right angles the indicator.

Figure 3 is a sectional view taken on the line 33'of Figure 1, looking in the direc-- tion of the arrows. Y

Figure 4 is a plan view of the film-hold ing portion with the indicator removed.

wure 5 shows a portion of the indicatpr which is a reverse of the view shown in Figure 1; v

smash s, nun-inmca'ron, ri'z'nanron.

Specification of Letters Patent. Patent d J 1 75 2 f Applicatin alga November- 16 1918-; Serial ms. 2633531 and? which are at"right angles" to'each, 58% other.- 7 v An indicator -8i,which' rises, from the pro? ect on 4is secured-in the following,manher.' It isfp royided withTa circular piIi; 9 that ..rests tight and snug in. the opening -5 A and also wit 1. a small plate: 10- which' 'runs parallel to the pin '9 a'nd rests against the.

surface. 6 or the surface 7, according to" the position in which it. is placed.-' The parts 9 7 and 10 riseifromj-a base 11- and run laterally -therefrom. This basejll, at its end remote from the plate 10, has 'a pointer. 12 extendmg. in a planethat'is parallel to the plane of the plate. 10, and runs parallel with-the plate 10 andthen at'an, angle of'45 degrees or substantially this, as indicated. The pointer 12 carries. a pivot. 13 on which is mounted an angle plate 14'whic'h is also iv-' otally mounted andprovicled with two dials,- one on each face, one for the pointer 12 and the second dial 15 for a pointer '16 which is pivotally mounted at 17, as shown, and provided with, a socket 18which is adapted to receive a removablvmouhted orange-stick 19 or similar device, which when in use, reststfio in or near the X-ra-ysand substantially parallel to their direction of propag'ation.

The two dials and two pointers 12 and 16, enable the dentist to set the stick 19 at-any desired inclination to the film holding 'portion 2, and he may r'ecord this inclination by" designating the two dials in any suitable way and the position of each pointer jon this dial so that at any future date, he may again set this stick at any desired inclination. f

-The first time the device is used .on a patient, as shown in Figure 6,'tlie patient is properly placed in' a chair and ,the X-rav tube also ut in the desired location," as indicated,'an then the. film holder with a film '96 mounted thereon and held between suitable guides. on the part 2 is put in the patients mouthat the desired locatiotrand held in the: patients mouth "at the desired location and held by the patient or in any other suitable way and the orange-stick 19 is manipulated sons to be parallel to the extension on the- X-ray tube (see Figure 6.) Exposure is then had in the conventional manner-andni ,reading is taken and recorded, which shows the position of'the, respective pointers 12and 16; ;-At a future time, when a second picture is taken to show any changes that may have as before. The X- 'ay tube is no adjusted until the orange-stick 19 lies parallelto the extension tube (see Figure 6.) Then a sec- 0nd picture is taken and the projection on the negative is exactly the same as the first and any changes which may appear upon a comparison on the two negatives indicate a change in the patient's condition.

The arm 3 could be fixed to thefilm holder 2 if that were desirable. hut it is'not. The preferred construction is shown in which this arm is pivoted at 20 and in the lilm holder 2 are placed two protuberam-es 21. either of which may be caused to register "ith a corresponding depression :22 in the arm 3 so that this arm may be placed at either side according to whether the plate holder is to be used at the right or left of the patient.

Iirview of the foregoing. it willjlie understood that my improved plate holder may he modified in various ways all of which come within the scopeof this invent-ion.

What I claim is:

1. In a plate holder. means for holding a tilm'and an indicator connected to the holder with means for enabling the indicator to h placed at the same angle to the nlm holder when itis desired to reproduce the relations between them.

.2. In a plate holder, means for holding a film. an arm pivotally mounted on said film holding means and an indicator mounted on said armand provided with means for permitting a shifting of the indicator toamy predetermined' angle with regard to the lilm holding means.

3. In a plate holder. means for holding a film and an indicator connected therewith so that it may be shifted to either side. oftho film holding means and set at any desired angle to the lilm.

4-. In a plate holder. means for holding a film. u pivoted arm mounted on said film holding means. and an indicator mounted on said arm by a suitable connection so that it may be held at any desired angle to the'lilm.

In a plate holder. means for holding a film aml an indicator connected to said tilm holding means. said indicator being prt'ivided with an angle plate and pointers pivotally connected therew. h. whereby the indicator may he set at a prcdretermim-d angle.

t3. In a plate holder. means For holding a film.' n'otnheram-es on said means. an arm pivoted to said means and provided \\'llll i\ correqmnding'depression so that it may he" held in either of two positions. a socket rising from said arm "with a plane face and an indicator provided with a plate aml pin adapted to engage said socket.

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